Between 100,000 and 200,000 Poles living in Britain may return home as a result of Britain leaving the European Union, a Polish government ministry said on Monday.

“The situation around Brexit combined with improvement in the socio-economic situation in Poland may mean that some Poles (an estimate of 100,000-200,000) presently living in Great Britain will decided to return,” Poland’s Development Ministry said in a reply to a question by a member of parliament.

Some 916,000 Poles live in the United Kingdom, according to 2015 data from Britain’s Office for National Statistics.